The Student Room Group

Reply 1

one of you must know ... come on help me out :smile: :smile: :smile:

Reply 2

Butterfly
Please...thank you :smile:.

i think its bright yellow but dont take my word for it.

Reply 3

Now I think it's colourless but the source isn't very reliable !

Reply 4

Butterfly
Please...thank you :smile:.


The answer is COULORLESS. The test for hydrogen sulphide is to bring lead ethanoate paper near H2S and itll turn from colourless to black.

xo

Reply 5

vinny2256
The answer is COULORLESS. The test for hydrogen sulphide is to bring lead ethanoate paper near H2S and itll turn from colourless to black.

xo


which unit is this in??? cos i havent learnt it at A2 and i cant find it in the unit 3 section, then again i havent really looked carefully, all these chemical formulae i see in front of my eyes lol

Reply 6

KerChing
which unit is this in??? cos i havent learnt it at A2 and i cant find it in the unit 3 section, then again i havent really looked carefully, all these chemical formulae i see in front of my eyes lol


I dont think you have to know this but its on the Northern Ireland CCEA board.

Reply 7

It's just a general test for hydrogen sulphide, which you might need to test for when reacting iodide ions with (conc.) sulphuric acid.

Reply 8

Butterfly
It's just a general test for hydrogen sulphide, which you might need to test for when reacting iodide ions with (conc.) sulphuric acid.


Exactly.